Air vent for an automobile



FIG. 1 is a plan view of the air vent showing my new design;

FIG. 2 is a perspective view thereof; and,

FIG. 3 is a further perspective view thereof.

In the drawings, the broken lines show portions of a vehicle and form no part of the claimed design. 

The ornamental design for an air vent for an automobile, as shown and described. 